The number 72 or 1 1/5 is the sexagesimal reciprocal of 50, which appears in the standard tables of reciprocals. Scholars have used the absence of any multiplication tables of 1 1/5 as evidence that they did not exist, and that Babylonians did not have multiplication tables for all sexagesimal numbers appearing in their standard table of reciprocals. The present unique tablet proves that making such assumptions is groundless.